[单选题]
If the accuracy in measuring the positkhvp ft6 5o*-o;d agr,ion of a p 0x5; q yjkbjo kenty,r3/tck28(nkv .article increases, the accuracy in measuring its veloci(5 kt .c32k njk q/ej8;0kyvbonrtxy,ty will
A. increase.
B. decrease.
C. remain the same.
D. be uncertain.
